VRF%20Commisioning%20sequence.pdf

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Commissioning sequence overview - SMMS and SHRM
For further details, please contact Toshiba Customer Service on 0870 8430333
Product Bulletin 518-0508
Commissioning sequence overview - SMMS and SHRM
Provide power to the outdoor unit (crank case heater power supply)
System pressure test
Connect service hoses to (discharge), liquid and gas service valves (and balance circuit if used). Pressurise
the system wit h oxygen-free nitrogen (OFN). All times shown are minimum - no maximum tim es apply
Pressure
Duration
1 50 psig
5 minutes
2 200 psig
5 minutes
3 450 psig
5 minutes
4 600 psig
1 hour
5 500 psig
24 hours
Any loss of pressure indicates a leak, which must be identified, repaired and re-tested.
When all tests have been successfully undertaken, vent nitrogen to atmosphere – with care.
De-hydration by vacuum pump (triple evacuation)
6 Evacuate to 10 Torr
7 Break vacuum with OFN and pressurise to 15 psig
8 Evacuate to 6 Torr
9 Break vacuum with OFN and pressurise to 15 psig
10 Evacuate to 4 Torr (3 Torr if ambient temperature is < 10ºC)
11 Isolate pump and check that vacuum is maintained for 30 minutes
Refrigerant charging
When all tests have been successfully undertaken, break vacuum with the required quantity of R410A NOTE 1 .
Clean refrigera nt must be used, and added only by weight and in liquid state.
12 Add refrigerant into the liquid circuit
13
Slowly open all isolation valves (fully) on all outdoor units, remove
service hoses and leak test
14 The system's first operation will be in the cooling mode
Indoor units (can be checked while the outdoor unit is being pressure tested/dehydrated)
Ö Check that fans rotate freely
Ö Check that water drains correctly.
Ö High static ducted models
o Check that a U trap is fitted
o Connect fan tapping as required (shipped at medium speed)
Ö Provide power to the indoor unit when safe to do so.
Addressing system from master outdoors unit
Ö Systems must be addressed separately, from the master outdoor unit
o Disconnect relay connector (as shipped)
Ö If connected to U1/U2 network, central control devices must be disconnected or powered off.
Ö A system identity will be provided during the automatic addressing process. This will be 1 for all
systems unless configured through switches SW13 and SW14 NOTE 2
Ö Leave/set service switches to 1 – 1 – 1 (as shipped)
Ö Leave/set switch SW30-2 to ON (as shipped)
Bulletin 518-0508 1 of 4
27 September 2005
6567768.001.png
Commissioning sequence overview - SMMS and SHRM
For further details, please contact Toshiba Customer Service on 0870 8430333
Ö All indoor units in every group linked (directly or indirectly) to the system must be energised (otherwise
addressing will be incomplete).
Ö Press SW15 for 2 seconds - system is now addressed from outdoor unit (may take 10 minutes).
Ö LEDsdisplay AUTO1 , AUTO2 ……… AUTO9
Ö When complete, master outdoor unit displays U1 - slave units display U2 U3 U4
Ö Use data retrieval to show that system capacity and the number of connected indoor units are correct.
o 1 – 2 – 3 shows system capacity (combined outdoor units)
o 1 – 3 – 3 shows the number of outdoor units
o 1 – 3 – 3 shows the number of indoor units (and how many require cooling)
o 2 – 5 – 1 press SW04 and indoor units demand cooling (40% demand for 1 hour)
o 2 - 14 - 2 press SW04 adds un-addressed indoor units to the system
o Set service switched to 1 - 1 - 1 when complete
Ö Other systems can be addressed in the same way - but always separately
To determine the address of each indoor unit (optional – unless system is to be centrally controlled)
The address is two part: system # - indoor #
Ö For single indoor units under a standard controller (RBC-AMT21/31E), pressing UNIT while the
controller is active will display the address
Ö For multiple indoor units under a standard controller , press TEST (spanner icon) + external fan control
for 4 sec. ALL is now displayed and all indoor fans in the group operate. Press UNIT and the master
unit's address is displayed, while it's fan (alone) runs. Press UNIT to scroll through group in the same
manner. Press TEST (spanner icon) to exit.
Ö For indoor units/groups under simple, wireless or central (only) control , temporarily connect a standard
controller RBC-AMT21/31E to terminals A-B and repeat the procedures shown above. A fault code
(E09) may be generated after 10 minutes. This can be avoided by setting the controller as a slave).
Group configuration(s) may now be made - through a standard controller by pressing TEST (spanner icon)
+ SET + CL simultaneously for 4 seconds. Changes made will be held by the master outdoor unit - which
will broadcast these settings to all other controllers used.
Ö Standard
Ö Simple
Ö Wireless
Ö Central
Dipswitch configurations (master outdoor unit only)
SW11-1
SW11-4
SW10-2
SW10-3
SW10-4
Mode selection (SMMS)
Float switches
Fan power
Low noise options
Off/off = heating priority
On/off = cooling priority
Off/on = majority priority
On/on = indoor unit priority
Off = system
shutdown
On = single unit
stopped
Off = 15 Pa
On = 45 Pa
On =
compressor
range reduced
On = outdoor
air flow reduced
Bulletin 518-0508 2 of 4
27 September 2005
SW11-2
6567768.002.png
Commissioning sequence overview - SMMS and SHRM
For further details, please contact Toshiba Customer Service on 0870 8430333
PCBs
TCB-PCM02E
4 possible applications within the master outdoor units – each allows an external switch to change the
system’s performance – depending on which PCB connection is used. Up to 4 of these PCBs may be used
if necessary
Ö CN508 night set back 50 dBA
Ö CN509 runs the outdoor fan at low speed (snow control)
o Continuous connection between COOL and COM
Ö CN510 operating mode (SMMS)
o COOL ONLY by continuous connection of COOL and COM
o HEAT ONLY by continuous connection of HEAT and COM
o Normal operation by breaking
Ö CN512 starts/stops all indoor units
o Start by pulsed connection between COOL and COM
o Stop by pulsed connection between HEAT and COM
TCB-PCDM2E
Load shedding control for SMMS or SHRM
A PCB that can be installed in the master outdoor unit. One or two, normally open switches may be
connected to its two circuits. Compressor speed is limited as a function of these switches being connected
in combination.
A number of options are available by Dipswitch however assuming interface PCB SW07 bits 1 and 2 are
both ON, load shedding will have this effect:
SW01
SW02
Compressor limit
off
off
100%
on
off
85%
off
on
75%
on
on
60%
Bulletin 518-0508 3 of 4
27 September 2005
6567768.003.png
Commissioning sequence overview - SMMS and SHRM
For further details, please contact Toshiba Customer Service on 0870 8430333
NOTE 1 Refrigeration charge calculation
Liquid pipe size
SMMS
SHRM
1/4"
0.025 kg/m 0.033 kg/m
3/8"
0.055 kg/m 0.072 kg/m
1/2"
0.105 kg/m 0.137 kg/m
5/8"
0.160 kg/m 0.208 kg/m
3/4"
0.250 kg/m 0.325 kg/m
7/8"
0.350 kg/m 0.455 kg/m
System refrigerant charge correction table (SMMS and SHRM2)
HP
1
2
3
cor r ect ion
HP
1
2
3
4
cor r ect ion
5
5
0
28
10
10
8
-2.0
6
6
0
30
10
10
10
0
HP
1
2
3
cor r ect ion
8
8
1.5
32
8
8
8
8
-6.0
8
8
2.0
10
10
2.5
32
12
10
10
1.0
10
10
2.5
12
12
3.5
34
10
8
8
8
-6.0
12
12
3.0
14
8
6
0
34
12
12
10
3.0
16
8
8
-1.5
16
8
8
0
36
10
10
8
8
-6.0
18
10
8
0
18
10
8
0
36
12
12
12
4.0
20
10
10
2.0
20
10
10
3.0
38
10
10
10
8
-6.0
24
8
8
8
-4.5
22
8
8
6
0
40
10
10
10
10
-5.0
26
10
8
8
-3.0
22
12
10
5.0
42
12
10
10
10
-4.0
28
10
10
8
-1.5
24
8
8
8
-4.0
44
12
12
10
10
-2.0
30
10
10
10
0
24
12
12
7.0
46
12
12
12
10
0
26
10
8
8
-4.0
48
12
12
12
12
2.0
NOTE 2 System address settings
Setting system address by Dipswitches.
Default address is 1 – addresses can be 1 – 28
SW14-1
SW14-2
SW14-3
SW14-4
SW13-4
Address increase
1
2
4
8
16
E.g. system 6 is 1 +
1
0
4
0
0
ON
OFF
ON
OFF
OFF
Bulletin 518-0508 4 of 4
27 September 2005
HP
1
2
3
cor r ect ion
HP
1
2
3
4
cor r ect ion
5
0
28
-2.0
5
10
10
8
HP
1
2
3
cor r ect ion
6
0
30
0
6
10
10
10
8
2.0
8
1.5
32
-6.0
8
8
8
8
8
8
10
2.5
10
2.5
32
1.0
10
10
12
10
10
12
3.0
12
3.5
34
-6.0
12
12
10
8
8
8
14
0
34
3.0
16
-1.5
8
8
8
6
12
12
10
16
0
36
-6.0
18
0
8
8
10
10
8
8
10
8
18
0
36
4.0
10
8
12
12
12
20
2.0
10
10
20
3.0
38
-6.0
10
10
10
10
10
8
24
-4.5
8
8
8
22
0
40
-5.0
8
8
6
10
10
10
10
26
-3.0
10
8
8
22
5.0
42
-4.0
12
10
12
10
10
10
28
-1.5
10
10
8
24
-4.0
44
-2.0
8
8
8
12
12
10
10
30
0
10
10
10
24
7.0
46
0
12
12
12
12
12
10
26
-4.0
48
2.0
10
8
8
12
12
12
12
6567768.004.png

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